Wheel hub



FIG. 1 is a perspective view of a wheel hub showing my new design;

FIG. 2 is a front elevational view thereof, the top and the bottom being identical in appearance;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a right side elevational view thereof. 

The ornamental design for a wheel hub, as shown and described. 